Safety Relays

What are they?
A safety relay is a device that monitors for potential errors or faults in machinery or plants and works to prevent injury and reduce risk. When an error occurs, the safety relay initiates a response to bring the risk back to a safe, acceptable level. Safety relays protect both machinery and employees, preventing potential expensive maintenance and equipment replacement.
Example functions include initiating a controlled pause in machinery or equipment to safely stop movement. They can also be used as an emergency stop mechanism, switching off the power to particular machinery or plants.
Single function or multi-function?
Safety relays can be single function or multi-function. Single function relays monitor a specific type of activity while multi-function safety relays can monitor different functions. Multi-function safety relays can be used in place of several single function, individual units.
The benefits of using multi-function relays include simpler installation and less wiring. As fewer individual units are needed, using multi-function relays can also free up panel space. Multi-function safety relays give you greater flexibility to make changes within the design or panel.
Where would you find a safety relay?
Safety relays are often found in the following control devices:
- Two hand controls
- Movable guards
- Light curtains, light barriers and light grids
- Magnetic switches
- Safety mats and pressure sensitive mats
- Three position devices
- Non-contact safety sensors
- Safety switches
- Emergency stop buttons
Who uses them?
Anyone can integrate a safety relay within a circuit to create a safety circuit without any specific training.

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Omschrijving Prijs Supply Voltage Number of Channels Auxiliary Contacts Function Safety Category ISO 13849-1 SIL IEC 61508 PL ISO 13849-1 Safety Contacts Range Reset Method Safety Category Terminal Type Standards Met Configurable
RS-stocknr. 861-5010
Fabrikantnummer2TLA020071R8100
FabrikantABB
€ 479,49
Each
Aantal stuks
24 V dc - - - - - - - Pluto - - - - -
RS-stocknr. 861-4896
Fabrikantnummer2TLA020009R0600
FabrikantABB
€ 484,53
Each
Aantal stuks
- - - - - - - - - - - M12 Connector - -
RS-stocknr. 861-5001
Fabrikantnummer2TLA020071R8000
FabrikantABB
€ 567,70
Each
Aantal stuks
24 V dc - - - - - - - Pluto - - - - -
RS-stocknr. 861-4950
Fabrikantnummer2TLA020056R0100
FabrikantABB
€ 28,24
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 733-2351
Fabrikantnummer2TLA010026R0500
FabrikantABB
€ 232,05
Each
Aantal stuks
230 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 4 - - - Terminal Block - -
RS-stocknr. 733-2391
Fabrikantnummer2TLA010029R0000
FabrikantABB
€ 151,10
Each
Aantal stuks
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 2 - - - Terminal Block - -
RS-stocknr. 917-6664
Fabrikantnummer2TLA010033R2000
FabrikantABB
€ 144,42
Each
Aantal stuks
24 V dc 1 - Emergency Stop, Safety Switch/Interlock - - - 4 - Automatic - Screw - -
RS-stocknr. 733-2436
Fabrikantnummer2TLA020052R1000
FabrikantABB
€ 281,60
Each
Aantal stuks
24 V dc - - Light Beam/Curtain, Safety Switch/Interlock - - - 2 - Automatic, Manual - Screw - -
RS-stocknr. 861-6647
Fabrikantnummer2TLA042022R2200
FabrikantABB
€ 306,21
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 917-6660
Fabrikantnummer2TLA010004R0000
FabrikantABB
€ 218,00
Each
Aantal stuks
24 V dc 2 1 Two-Hand Control - - - 3 - Automatic - Screw - -
RS-stocknr. 733-2360
Fabrikantnummer2TLA010028R1000
FabrikantABB
€ 278,86
Each
Aantal stuks
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 5 - - - Terminal Block - -
RS-stocknr. 861-4887
Fabrikantnummer2TLA010030R3000
FabrikantABB
€ 161,00
Each
Aantal stuks
24 V dc 2 - Expansion Module - - - 4 - Automatic - Screw - -
RS-stocknr. 861-4871
Fabrikantnummer2TLA010027R0100
FabrikantABB
€ 258,88
Each
Aantal stuks
24 V ac/dc 2 1 Expansion Module - - - 4 - Automatic - Screw - -
RS-stocknr. 733-2345
Fabrikantnummer2TLA010026R0200
FabrikantABB
€ 236,30
Each
Aantal stuks
24 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 4 - - - Terminal Block - -
RS-stocknr. 917-6673
Fabrikantnummer2TLA010033R3000
FabrikantABB
€ 161,95
Each
Aantal stuks
24 V dc 2 - Emergency Stop, Safety Switch/Interlock - - - 4 - Automatic - Screw CCC, CCSAus, CE, EN 60204-1:2006 + A1:2009, EN 62061:2005, EN 954-1:1996, EN ISO 12100-1:2003, EN ISO 12100-2:2003, EN ISO 13849-1:2008, IEC 60529, IEC 60947-5-1:2009, TUV -
RS-stocknr. 733-2373
Fabrikantnummer2TLA010028R2000
FabrikantABB
€ 278,86
Each
Aantal stuks
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 5 - - - Terminal Block - -
RS-stocknr. 917-6676
Fabrikantnummer2TLA010005R0100
FabrikantABB
€ 164,00
Each
Aantal stuks
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 - Automatic - Screw - -
RS-stocknr. 861-4985
Fabrikantnummer2TLA020070R1100
FabrikantABB
€ 1.186,91
Each
Aantal stuks
24 V dc - - - - - - - Pluto - PLe/Cat.4 EN ISO 13849-1, 4 EN 954-1 - - -
RS-stocknr. 861-4903
Fabrikantnummer2TLA020054R1100
FabrikantABB
€ 64,60
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 733-2424
Fabrikantnummer2TLA010002R0400
FabrikantABB
€ 253,00
Each
Aantal stuks
115 V ac 2 - Two-Hand Control - - - 4 - - - Screw - -